Wire mesh, expanded metal and perforated metal can all produce an open, breathable sheet, but they start from different raw forms and are made in completely different ways. Understanding how each is produced makes it much easier to pick the right one for strength, open area, appearance or cost.
How each is made
Wire mesh is built from individual wires that are either woven (interlaced and crimped) or welded at their intersections, giving accurate, repeatable openings. Expanded metal starts as a solid sheet that is simultaneously slit and stretched, opening into a continuous diamond pattern with no welds or joints. Perforated metal also starts as solid sheet, but holes are punched out in a chosen pattern, leaving a flat sheet with clean, precisely placed openings.
Open area, strength and appearance
Open area generally trends from wire mesh (which can be very open and fine) toward perforated metal, where open area is set by hole size and spacing and is often lower for a given strength. Expanded metal tends to offer a strong strength-to-weight ratio because it is one continuous piece with no joints to fail. Appearance differs too: mesh reads as a grid, expanded metal shows angled diamonds with a directional texture, and perforated metal gives a flat, uniform pattern that is the most decorative and customisable of the three.
Side-by-side comparison
| Criteria | Wire mesh | Expanded metal | Perforated metal |
|---|---|---|---|
| Manufacture | Woven or welded from wires | Slit and stretched from solid sheet | Holes punched from solid sheet |
| Open area | Can be high; very fine achievable | Moderate to high, set by pattern | Set by hole size and spacing, often lower |
| Strength-to-weight | Good; depends on weave/weld and gauge | Strong; one-piece, no joints | Good; reduced by hole pattern |
| Appearance | Grid pattern, fine to coarse | Directional diamond texture | Flat, uniform, highly customisable holes |
| Typical use | Filtration, sieving, fencing, screens | Walkways, infill, security, grating-style panels | Architecture, facades, guards, acoustic and decorative panels |
| Cost | Varies with fineness and material | Often economical for the strength offered | Varies with hole pattern and tooling |
Which should you choose?
- Choose wire mesh when you need accurate, often fine openings for filtration, sieving, screening or fencing.
- Choose expanded metal when you want strong, economical, joint-free sheet for walkways, infill panels, security screens or robust covers.
- Choose perforated metal when you want clean, precise, customisable holes for architectural, decorative, acoustic or guard applications.
Fine separation, think wire mesh. Strong, economical, joint-free sheet, think expanded metal. Precise, decorative holes, think perforated metal.